What if consciousness isn’t something that exists only in complex brains, like our human brains, but instead is a fundamental process that occurs across all life? Recent research suggests that consciousness can be understood as the process of experiencing information through unique filters or “lenses.” This ability extends beyond humans to animals, plants, and even bacteria.
The Universal Nature of Awareness
This lens metaphor helps explain how different organisms perceive reality differently. Just as optical lenses bend light to create images, biological systems filter and focus information to create consciousness. For example, a raptor’s visual system acts like a telephoto lens, detecting movement at great distances. Harris’s hawks can detect colored objects at twice the distance humans can. Similarly, a dog’s olfactory system perceives scents that are undetectable to humans, allowing them to gather information about their current and historical environment. Because of their exceptional ability to smell, dogs can be trained to detect drugs, explosives, and even illnesses such as cancer, diabetes, or infectious diseases.
Even plants demonstrate the ability to perceive sensory information about their environment. Research has shown that plants’ roots can detect moisture at a distance, and some species even respond to the sounds of approaching pollinators or vibrations from herbivorous insects. This suggests that awareness exists wherever life has evolved the ability to detect information in the environment.
Bacteria can detect differences in chemical concentrations. They also possess a form of short-term memory. They remember chemical concentrations they encountered seconds earlier and use this information to navigate toward food. Bacteria can even communicate with each other through chemical signals, allowing groups to collectively evaluate their environment and alter their behavior. These discoveries reveal that even the simplest organisms possess a kind of primitive consciousness, using sensing and memory to continuously learn from and adapt to their surroundings—abilities that were once thought to require a brain.
Human Consciousness
What makes human consciousness unique isn’t just its complexity, but rather its remarkable ability to change. Various factors can dramatically alter our perceptions, emotions, and cognitions, resulting in entirely different states of consciousness. These factors, which act as lenses that modify our experience, produce different states of consciousness.
Psychedelics as Lens Modifiers
Psychedelic medicines like psilocybin, LSD, and ayahuasca act as powerful lenses that change how our brain processes information. Neuroimaging studies have shown that psychedelics reduce activity in the brain’s default mode network, which is the neural system responsible for maintaining our sense of a separate self. This reduction in activity appears to change our ordinary lenses of perception, allowing us to experience patterns and connections that are not usually detectable during waking consciousness.
This can result in phenomena such as synesthesia (merged senses), altered time perception, and strong feelings of interconnectedness. It is as if the lens system has revealed hidden aspects of reality that we were not previously aware of.
Peak Experiences and Flow States
In the 1960s, psychologist Abraham Maslow described peak experiences as moments of transcendent awareness that occur during intense beauty, athletic performance, or creative breakthrough. Modern neuroscience suggests these states involve a temporary rewiring of brain networks, particularly reduced activity in the prefrontal cortex—a phenomenon researchers call “transient hypofrontality.”
During flow states, the normal boundaries between our self and the environment become more permeable, creating a state of consciousness in which information is available to us that is not generally available during normal waking consciousness.
Mystical Experience and Meditation
Perhaps the most dramatic change in consciousness occurs through the lenses that produce mystical experiences. In this state, the usual distinction between self and other dissolves entirely. Brain imaging studies of experienced meditators show they experience profound changes in neural connectivity. In particular, they exhibit increased integration between brain networks that are typically separate.
Long-term meditation practices similarly alter our lenses by changing our brain’s structure. Research has shown that mindfulness meditation increases gray matter density in areas associated with attention and sensory processing while decreasing activity in the default mode network.
Implications for Understanding Consciousness
Consciousness Essential Reads
This lens model offers several important insights. First, it suggests that human consciousness exists on a spectrum rather than being an all-or-nothing phenomenon. Also, the difference between human, animal, plant, and bacterial consciousness involves experiencing awareness through different lenses.
Second, it helps explain why altered states feel so profound. They are not merely hallucinations or loss of touch with reality. Rather, they are different ways of experiencing the same basic reality through different lenses that produce unique experiences. When psychedelics or meditation alter our lens system, we may actually be tapping into information that is always present but is normally filtered out.
Finally, this perspective suggests that ordinary waking consciousness may not be the gold standard of perception, but instead just one possible experience. The human capacity for experiencing altered states of consciousness—through the use of substances, meditation practices, or other methods—demonstrates that consciousness may be far more varied than our everyday state reveals.
The Bottom Line
Viewing consciousness as awareness experienced through different lenses provides a framework for understanding the full spectrum of consciousness. This spectrum ranges from bacterial communication and plant environmental responses to animals’ extraordinary sensing capacities and profound human mystical experiences. Within this framework, human consciousness represents one specific type of awareness, one that is shaped by our uniquely human lenses.
